I'm running windows xp pro on a 1.3Ghz PIII, with 1Gb RAM, and 120Gb h/d. the problem is, I noticed the system becoming very choppy and jerky, when I checked the processes and cpu usage, I noticed the 'system idle process' is using 95% of the cpu, all other processes are using upto 5%, what can cause the system idle process to use so much cpu usage? even when I 'end task' all but the system processes, the system idle process is still using 95% of the cpu usage, even after a safe mode restart, it's still the same.